about it's Kinetic Energy? Kinetic Energy Increases O Kinetic Energy Decreases O Kinetic Energy remains the same O Kinetic Energy is zero What happens to the total energy of an object if the sum of the net forces acting on it is zero? Energy increases
Q: How is it possible to carry books to school without changing the kinetic or potential energy of the…
A: Given Data: Is it possible to carry books to school without changing the kinetic or potential energy…
Q: A child pulls on a wagon with a horizontal force of 75N. If the wagon moves horizontally a total of…
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Q: 5m 0:00.0 10m V= 10 m/s F = 40 N 15m Calculate the work done on the car. What did the work become?…
A: So we have given a car initially at 15 m and finally at 25 minitial velocity at 15 m is 10 m/s and…
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A: Work Energy theorem state that Total work done by conservative, non conservative and pseudo forces…
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Q: A 1 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 5 m…
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Q: A box is pulled across a horizontal rough table at a steady speed for a certain distance. What is…
A: When the box is pulled across the table at a steady speed (i.e, constant speed), then its…
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Q: A 1.5 Kg ball at initial altitude of 0.0 m is trough upward with an initial speed of 10.0 m/s What…
A: Given data: Mass (m) = 1.5 kg Initial altitude (h) = 0.0 m Initial Speed (v) = 10.0 m/s Required:…
Q: A man is pushing a lawnmower as shown in the diagram above with an angle of 0-30 below the…
A: Given data: Angle (θ) = 30°,below the horizontal Force (F) = 100 N Work done (W) = 1000 J…
Q: Energy (mJ) 600 400 200 0 Potential energy Kinetic energy Mechanical energy XOXO 5 6 3 4 Time (s) 0…
A: The answer is 'mechanical energy is lost to friction'
Q: A force F of magnitude 920 lb is applied to point C of the bar AB as shown. Determine both the x-y…
A: A force F of magnitude 920 lb is applied to point C of the bar AB as shown in the figure. We need to…
Q: A rope exerts a force Fon a 20.0-kg crate. The crate starts from rest and accelerates upward at 5.00…
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Q: a child pulls a box of 6kg a distance of 10 meters along a rough horizontal surface with a…
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Q: A block is pushed across a 10 m rough surface quickly by a boy. Which of the following would not…
A: A block is pushed along a 10 m rough surface very quickly by a boy Power = WD / time = M×a×x/t In…
Q: A skater (at rest)starts at top of a ramp at a height of 4m and moves to the bottom of the ramp…
A: Weight , W = 490 N Height , h = 4m
Q: A glob of slime is launched or dropped from the edge of a cliff. Which of the graphs in the figure…
A: Solution Given dataA glob of slime is launched or dropped from the edge of a cliff.Which of the…
Q: 1) A 1622 kg car has a speed of 11.3 m/s when it hits a tree. The tree doesn’t move and the car…
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Q: Conservation of Energy A Calculate /00 m
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- 20Jeanine used 250 J of energy to lift a 15 kg box. How far did she lift the box? А 1.7 m 3.8 m 17 m 380 mA 2.0 kg rock is released from rest at a height 0f 20.0 m. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights: 20.0, 15.0, 10.0, 5.0 and 0m
- 3) The figure below illustrates a skier who is skiing on a large frictionless spherical ball of snow. The skier can be treated as a point-like object. The skier starts at the top of the ball with very little speed and picks up speed while traveling along the surface of the snow. During this time, the only forces acting on the skier are the gravitational force applied by the Earth and the normal force applied by the snow. At the moment the radial line extending from the skier to the center of the ball defines an angle a with respect to a vertical line, the skier is about to lose contact with the ball. Determine the value of a.]] The figure below represents: Ankle v D HARTAME M *********** Knee v hoit LE the work-energy theorem figure questions/6915149 Ankle h O muscle forces applied to the leg during running O a free-body diagram of the leg while a person is rising from a seated position O the impulse-momentum analysis applied to a runner's leg #1 Knee h Leg mg hpEx(N) 80 50 25 X(m) 10 25 40 50 58 1) Work by a force, drawn on a graph, determine: c) Kinetic energy at position x = 58 m, if at the beginning of position x = 0 the velocity of the object is zero? d) Velocity at x=25m if the mass of the object is 5 kg
- Question 9 What is the kinetic energy of a 1500 pound car travelling at 40 meters per second? « Previous No new data to save.When a roller coaster is at the top of a steep hill, its potential energy is maximum. When it hurdles down the slope and comes to the bottom, the potential energy reduces greatly. Hence we can say that the law of conservation of energy is not valid here since energy is destroyed. a) True b) False10 kg 0=37° 55 N 5 m **22. A string exerts a tension force of 55 N on a 10-kg block as it moves a distance of 5 m up a frictionless incline, as shown. The string pulls parallel to the incline. asmisioa) a) Find the total external work done on the block-earth system as the block moves 5 m up the incline. b) Find the change in gravitational potential energy for the block-earth system as the block moves 5 m up the incline. ga c) Find the change in kinetic energy for the block-earth system as the block moves 5 m up the incline.
- A roller coaster car has a massive 320 kg. Starting from the rest the car requires 3.5×10^5 joules of kinetic energy As it designs to the bottom of the hill in 4.5 seconds calculate in meters the height of the hillIf the force acts on an object that is initially at rest with mass 1kg, what is the objects final velocity? Hint: Work done = Change in KE F, (N) 15 10 5 0 0 Select one 1 2 3 -x (m)Does the net work done on a particle depend on the choice of reference frame? yes no